Skip to content

For service status updates click here

Vitamin K (Nutritional) Blood Test
Vitamin K (Nutritional) Blood Test
Vitamin K (Nutritional) Blood Test
Vitamin K (Nutritional) Blood Test
Vitamin K (Nutritional) Blood Test

Vitamin K (Nutritional) Blood Test

A blood test to measure the levels of vitamin K, which is important in blood clotting as well as regulating blood calcium levels and bone metabolism.
Blood sample 1 biomarker included 13 working days turnaround
from sample receipt at lab

What's included?

Biomarker profile

  • Vitamins

Vitamins (1 Biomarker)

Special instructions

Do not eat for 12 hours prior to your test. Drink plenty of water, if you take medication then you are allowed to take it as you would normally. Wrap your sample in foil immediately after it is taken.
Vitamin K refers to a group of fat-soluble vitamins that play a role in blood clotting as well as regulating blood calcium levels and bone metabolism. In the liver, vitamin K is required to produce 4 factors that are necessary for blood to properly clot: prothrombin and factors VII, IX, and X.

Most people get all the vitamin K they need by eating a varied and balanced diet. Because vitamin K is a fat-soluble vitamin, any vitamin K in the body that is not needed immediately is stored in the liver for future use. Green leafy vegetables including broccoli and spinach, vegetable oils and fortified cereals are all good sources of vitamin K. 

In the UK for those who eat a healthy, balanced diet a vitamin K deficiency is rare. However, those at risk of developing a vitamin K deficiency include those with conditions that limit absorption of dietary vitamins such as biliary obstruction, coeliac disease, ulcerative colitis and cystic fibrosis. Vitamin K supplements are also available but monitoring the dose is important as too much can be harmful, so it is advised you speak with your doctor before supplementing vitamin K.

This test measures the level of vitamin K in your blood.

Dr Sam Rodgers MBBS, MRCGP

How it works

  • Take the test

    Collect your sample at home, visit a partner clinic, or we can even send a nurse to you.
  • Post your sample

    Send your sample back on the same day you take it in the freepost pack to our laboratory.
  • Get your results

    View your results with doctor's advice on your personal dashboard.
Laboratories you can trust

Laboratories you can trust

Trusted by the NHS and private clinics alike, you can be sure of the highest testing standards from our fully accredited partner laboratories.

Expert interpretation <br>
of your results

Expert interpretation
of your results

One of our team of doctors will review your results and give you personalised advice based on your medical history, lifestyle and health and fitness goals.

Your personal<br>
health centre

Your personal
health centre

Discover the easy way to track your health through our online portal, View your results with doctor's advice, monitor any changes over time and see the improvements you can make to your health with simple lifestyle changes.

Questions? Let us help

Questions? Let us help

Our customer care team is on-hand to help you find the test that's right for you. Get in touch via phone, live chat or email.

What our customers say

We ask every Medichecks customer about their experience - read what they have to say


Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. Our doctors will interpret your results based on the information you have provided, but will not diagnose, consult or provide any treatment. You will be advised to see your doctor for any necessary follow-up action.